taken 11 years ago, near to Llanberis, Gwynedd, Great Britain

Twll Uchaf, Chwarel Glynrhonwy Uchaf - Upper Pit, Upper Glynrhonwy

Glynrhonwy tends to be too much of a mouthful so that the Glynrhonwy Quarries are known locally simply as Chwarel Glyn, with the standardised 'chwarel' turning into 'chwaral' in the local dialect.
This pit, one of two in the upper quarry was developed between 1830 and 1860. After being idle for a decade it was reopened in 1870 and was then served by the Ffridd Incline. Following an amlgamation with Glynrhonwy Lower in the 1890s the Ffridd was replaced by an internal system which linked both quarries to a reduction area near the shores of Llyn Padarn. The company went bankrupt in 1915. Later reopened, it continued to produce slate until its final closure in 1930.